Major refactoring of structures, with unit tests.

host/include/host_key.h

+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Host-side functions for verified boot.
+ */
+
+#ifndef VBOOT_REFERENCE_HOST_KEY_H_
+#define VBOOT_REFERENCE_HOST_KEY_H_
+
+#include <stdint.h>
+
+#include "cryptolib.h"
+#include "utility.h"
+#include "vboot_struct.h"
+
+
+typedef struct rsa_st RSA;
+
+/* Private key data */
+typedef struct VbPrivateKey {
+  RSA* rsa_private_key;  /* Private key data */
+  uint64_t algorithm;    /* Algorithm to use when signing */
+} VbPrivateKey;
+
+
+/* Read a private key from a file.  Caller owns the returned pointer,
+ * and must free it with PrivateKeyFree(). */
+VbPrivateKey* PrivateKeyRead(const char* filename, uint64_t algorithm);
+
+
+/* Free a private key. */
+void PrivateKeyFree(VbPrivateKey* key);
+
+
+/* Initialize a public key to refer to [key_data]. */
+void PublicKeyInit(VbPublicKey* key, uint8_t* key_data, uint64_t key_size);
+
+
+/* Allocate a new public key with space for a [key_size] byte key. */
+VbPublicKey* PublicKeyAlloc(uint64_t key_size, uint64_t algorithm,
+                            uint64_t version);
+
+
+/* Copy a public key from [src] to [dest].
+ *
+ * Returns 0 if success, non-zero if error. */
+int PublicKeyCopy(VbPublicKey* dest, const VbPublicKey* src);
+
+
+/* Read a public key from a file.  Caller owns the returned pointer,
+ * and must free it with Free().
+ *
+ * Returns NULL if error. */
+/* TODO: should really store public keys in files as VbPublicKey */
+VbPublicKey* PublicKeyRead(const char* filename, uint64_t algorithm,
+                           uint64_t version);
+
+#endif  /* VBOOT_REFERENCE_HOST_KEY_H_ */